I am in the process of doing a SAS with a 85 axel and TG 3" kit on the front. The rear is receiving Chevy 63" springs. I have everything tacked into place and I'm not sure about the shackle angles or the upper shock Mt placement . My rear shackles are set at 18degs. Is this enough or should I have more angle? Also what do I need to do with the porpotional valve..relocate it or bend the lines around the shock Mt bar? Any
advice would be appreciated.